CN208675523U - A kind of acoustical generator - Google Patents

Abstract

The utility model discloses a kind of acoustical generator, is related to electro-acoustic product technical field.The acoustical generator includes vibrational system and magnetic circuit system；The vibrational system includes vibrating diaphragm and fixed Voice coil assemblies in conjunction with vibrating diaphragm；The Voice coil assemblies include speech coil framework；The speech coil framework includes fixed fixation end face in conjunction with vibrating diaphragm, and the fixed end face is provided with the groove being recessed to the direction far from the vibrating diaphragm.Voice coil resonant phenomenon can be effectively relieved by the way that groove structure is arranged on speech coil framework in the acoustical generator, promote the acoustical behavior of acoustical generator.

Description

A kind of acoustical generator

Technical field

The utility model relates to electro-acoustic product technical fields.More particularly, to a kind of acoustical generator.

Background technique

Acoustical generator is the important acoustic element of portable electronic device, is turned between electric signal and voice signal for completing It changes, is a kind of energy conversion device.Minitype acoustic generator generally includes shell and is housed in the intracorporal vibrational system of shell and magnetic circuit system System, magnetic circuit system includes conductive magnetic yoke, and the medial center position of conductive magnetic yoke is successively fixed with centring magnet and center magnetic conductive board；Vibration System includes vibrating diaphragm and voice coil, and voice coil is looped around the periphery of centring magnet and center magnetic conductive board, and with the alternation by it Audio signal does upper and lower cutting magnetic line movement, so that vibrating diaphragm be driven to instigate air sounding.

Generally existing voice coil or the phenomenon that speech coil framework resonance in acoustical generator at present.Due to voice coil or the material of speech coil framework Matter is softer, and Aspect Ratio is larger etc., so that the intensity of voice coil is weaker, is easier to the case where voice coil own resonance occur in high frequency treatment, The big spike of product intermediate frequency distortion is caused, the acoustical behavior of acoustical generator is influenced.

Accordingly, it is desirable to provide a kind of acoustical generator that can alleviate voice coil resonant.

Utility model content

The purpose of this utility model is that being to provide a kind of acoustical generator with special voice coil structure, which can be effective Alleviate voice coil resonant.

In order to achieve the above objectives, the utility model adopts the following technical solutions:

A kind of acoustical generator, including vibrational system and magnetic circuit system；The vibrational system includes vibrating diaphragm and in conjunction with vibrating diaphragm Fixed Voice coil assemblies；The vibrating diaphragm includes fixed part, the ring portion being wholely set with fixed part and in ring portion Central portion；

The Voice coil assemblies include speech coil framework；The speech coil framework includes fixed fixation in conjunction with vibrating diaphragm central portion End face, the fixed end face are provided with the groove being recessed to the direction far from the vibrating diaphragm.

Preferably, the orthographic projection of the speech coil framework in the horizontal plane circular configuration annular in shape, the groove is along the sound Ring framework is circumferentially uniformly arranged.

Preferably, the orthographic projection of the speech coil framework in the horizontal plane rectangular configuration annular in shape, the speech coil framework include two Symmetrically arranged first avris and two symmetrically arranged second avris；

The groove is symmetricly set on the corresponding fixed end face of the first avris of speech coil framework, and/or is symmetricly set on On the corresponding fixed end face of second avris of speech coil framework.

Preferably, sealing is filled in the groove.

Preferably, the vibrating diaphragm further includes fixed reinforcement part in conjunction with the central portion.

Preferably, the speech coil framework is located at the ipsilateral of the vibrating diaphragm with the reinforcement part；Or the speech coil framework knot It closes and is fixed on the side surface far from the reinforcement part of the vibrating diaphragm central portion.

Preferably, the central hollow out of the vibrating diaphragm central portion, the hollowed out area of the reinforcement part covering vibrating diaphragm central portion.

Preferably, the groove includes bottom surface, and the bottom surface is flat face or cambered surface.

Preferably, the groove further includes side wall surface, and the side wall surface is flat face or cambered surface.

Preferably, the groove is continuous integral structure, or the segmental structure for spaced set.

The beneficial effects of the utility model are as follows:

Acoustical generator provided by the utility model, under the premise of not changing vibrational system process requirements, make speech coil framework with Groove structure, the hard contact area reduction of speech coil framework and vibrating diaphragm, to mitigate bone are formed on the fixation end face of vibrating diaphragm central portion Resonance between frame voice coil and vibrating diaphragm is obviously improved the acoustical behavior of acoustical generator；Skeleton recess fills sealing, and it is whole to improve voice coil The damping characteristic of body can also enhance the bonding strength between Voice coil assemblies and vibrating diaphragm.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is simply introduced.It is understood that the accompanying drawings in the following description is only some realities of the invention Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings.

Fig. 1 shows the vibrational system installation diagram of the utility model acoustical generator.

Fig. 2 shows the vibrational system schematic cross-sections of the utility model acoustical generator.

Description of symbols: 1, vibrating diaphragm；11, reinforcement part；21, speech coil framework；211, groove；22, voice coil line.

Specific embodiment

In order to illustrate more clearly of the utility model, the utility model is done into one below with reference to preferred embodiments and drawings The explanation of step.Similar component is indicated in attached drawing with identical appended drawing reference.It will be appreciated by those skilled in the art that below Specifically described content is illustrative and be not restrictive, and should not be limited the protection scope of the present invention.

Technology and equipment known to person of ordinary skill in the relevant may be not discussed in detail, but in feelings appropriate Under condition, the technology and equipment should be considered as part of specification.

The resonance phenomena of the generally existing voice coil of acoustical generator in the prior art.Since the material is soft for voice coil, Aspect Ratio compared with It is big etc., so that the intensity of voice coil is weaker, it is easier to the case where voice coil own resonance occur in high frequency treatment, causes product intermediate frequency distortion big Spike influences the acoustical behavior of acoustical generator.

For the technical problems in the prior art, the utility model provides a kind of acoustical generator, specifically, below with reference to Attached drawing is described in detail.Fig. 1 shows the vibrational system installation diagram of the utility model acoustical generator；Fig. 2 shows the utility model hairs The vibrational system schematic cross-section of sound device.

Shown in referring to Figures 1 and 2, acoustical generator vibrational system provided by the utility model and magnetic circuit system (do not show in figure Out).The vibrational system includes vibrating diaphragm 1 and is combined fixed Voice coil assemblies with vibrating diaphragm 1；The vibrating diaphragm 1 include fixed part, with The ring portion and the central portion in ring portion that fixed part is wholely set, the vibrating diaphragm of this structure belong to those skilled in the art The common knowledge of member, more specific structure are no longer repeated herein.

In the present invention, the magnetic circuit system of acoustical generator can be single magnetic circuit, be also possible to those skilled in the art institute Well known other magnetic circuit systems, the magnetic circuit system for example including three blocks of magnet or five blocks of magnet.Those skilled in the art can be with The concrete configuration mode of magnetic circuit system and shell is designed as the case may be, and the utility model is without restriction to this.

In the acoustical generator of the utility model, the Voice coil assemblies include speech coil framework 21 and are wrapped on speech coil framework 21 Voice coil line 22；The speech coil framework 21 is combined fixation with vibrating diaphragm 1 by the fixation end face of speech coil framework 21；The fixed end face It is provided with the groove 211 being recessed to the direction far from vibrating diaphragm 1.

Acoustical generator provided by the utility model makes speech coil framework 21 under the premise of not changing vibrational system process requirements With formation 211 structure of groove on the fixation end face of 1 central portion of vibrating diaphragm, the hard contact area of speech coil framework 211 and vibrating diaphragm 1 reduces, To mitigate the resonance between skeleton voice coil and vibrating diaphragm 1, it is obviously improved the acoustical behavior of acoustical generator.

In some preferred embodiments of the utility model, the orthographic projection of the speech coil framework in the horizontal plane is annular in shape Circular configuration or cyclic annular rectangular configuration.

When the orthographic projection of the speech coil framework in the horizontal plane circular configuration annular in shape, the groove is along the voice coil bone Frame is circumferentially uniformly arranged；When the orthographic projection of the speech coil framework in the horizontal plane square structure annular in shape, i.e. the voice coil bone Frame includes two symmetrically arranged first avris and two symmetrically arranged second avris, and the length of first avris is equal to the second side The length of side, the groove are symmetricly set on the first avris and/or the corresponding fixed end face of the second avris of speech coil framework.

In this preferred embodiment, as depicted in figs. 1 and 2, the orthographic projection of the speech coil framework 21 in the horizontal plane Rectangle structure annular in shape, the length of first avris are greater than the length of the second avris, i.e., the described speech coil framework 21 includes two A symmetrically arranged long axis avris and two symmetrically arranged short axle avris, the corresponding fixed end surface symmetric of two long axis avris It is recessed inwardly to form fluted 211, the groove 211 runs through the interior outer surface of speech coil framework 21.In the length of speech coil framework 21 211 structure of groove is arranged in axis avris, can reduce the polarization and resonance phenomena of speech coil framework 21, effectively promotes the acoustics of acoustical generator Performance.

In this preferred embodiment, gluing is fixed between the fixation end face and vibrating diaphragm 1 of speech coil framework 21, speech coil framework Sealing is also filled in 21 groove 211.The damping characteristic that voice coil entirety not only can be improved is designed in this way, also increases voice coil bone Sealing amount between frame 21 and vibrating diaphragm 1 enhances the bonding strength between voice coil and vibrating diaphragm 1, prevents voice coil from falling off.

In the preferred embodiment, the vibrating diaphragm 1 further includes fixed reinforcement part in conjunction with the central portion, reinforcement part Setting the intensity of vibrating diaphragm 1 itself can be enhanced.

Combination between vibrating diaphragm and speech coil framework can have different modes.

The ipsilateral or described reinforcement part that the speech coil framework is located at the vibrating diaphragm with the reinforcement part is located at the vibrating diaphragm On the side surface far from the speech coil framework of central portion.

When the speech coil framework and the reinforcement part be located at the vibrating diaphragm it is ipsilateral when, the speech coil framework can be in conjunction with consolidating It is scheduled on a side surface of the separate vibrating diaphragm central portion of the reinforcement part or the speech coil framework is in conjunction with being fixed on the reinforcement The edge of vibrating diaphragm central portion on the outside of portion.

In embodiment of above, it is preferable that the central hollow out of the vibrating diaphragm central portion, hollow design can reduce acoustical generator The weight of product improves the sensitivity of acoustical generator；The hollowed out area of the reinforcement part covering vibrating diaphragm central portion, to guarantee acoustical generator The airtightness of the preceding operatic tunes and the rear operatic tunes.

Specifically, in this preferred embodiment, as depicted in figs. 1 and 2, the vibrating diaphragm 1 further includes and the center Portion combines fixed reinforcement part 11；The medium position hollow out of 1 central portion of vibrating diaphragm, the reinforcement part 11 cover 1 center of vibrating diaphragm The hollowed out area in portion.The speech coil framework 21 is located at the not ipsilateral of vibrating diaphragm 1 with the reinforcement part 11, and the speech coil framework 21 is consolidated Fixed end face is fixed in conjunction with the edge of the central portion.

In this preferred embodiment, as shown in Fig. 2, the groove 211 include bottom surface and side wall surface, the bottom surface and Side wall surface is flat face, and groove 211 is whole to be in the form of a column structure.It is described in other preferred embodiments of the utility model Groove may include the bottom surface in cambered surface or flat face, can also include the side wall surface in cambered surface or flat face.When the bottom of groove When face and arc-shaped side wall surface, the adhesive strength between speech coil framework and vibrating diaphragm can be improved.Those skilled in the art can also be with According to actual needs by groove design at other shapes, the utility model no longer limits this.

It forms in order to facilitate processing, in the preferred embodiment, two long axis of the groove 211 in speech coil framework 21 It is symmetrically arranged continuous integral structure, molding easy to process on side.In actual design process, those skilled in the art Member can also be by groove design at the segmental structure of spaced set, and the above structure may be implemented to mitigate the function of resonance.

Acoustical generator in the utility model can be acoustical generator monomer, or acoustical generator mould group.About acoustical generator list Body and the specific structure of acoustical generator mould group belong to the common knowledge of those skilled in the art, are not repeated here herein.

Acoustical generator provided by the utility model, by the groove design on the fixed end face of speech coil framework, make speech coil framework with The hard contact area of vibrating diaphragm reduces, to mitigate the resonance between skeleton voice coil and vibrating diaphragm, is obviously improved the acoustics of acoustical generator Energy.

Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and It is not limitations of the embodiments of the present invention, for those of ordinary skill in the art, in above description On the basis of can also make other variations or changes in different ways, all embodiments can not be exhaustive here, It is all to belong to obvious changes or variations that the technical solution of the utility model is extended out still in the utility model The column of protection scope.

Claims (10)

1. a kind of acoustical generator, including vibrational system and magnetic circuit system；The vibrational system includes vibrating diaphragm and consolidates in conjunction with vibrating diaphragm Fixed Voice coil assemblies；The vibrating diaphragm include fixed part, the ring portion being wholely set with fixed part and in ring portion in Centre portion；It is characterized in that,

The Voice coil assemblies include speech coil framework；The speech coil framework includes fixed fixation end face in conjunction with vibrating diaphragm, described Fixed end face is provided with the groove being recessed to the direction far from the vibrating diaphragm.

2. acoustical generator according to claim 1, which is characterized in that the orthographic projection of the speech coil framework in the horizontal plane is in ring Shape circular configuration, the groove are uniformly arranged along the circumferential direction of the speech coil framework.

3. acoustical generator according to claim 1, which is characterized in that the orthographic projection of the speech coil framework in the horizontal plane is in ring Shape rectangular configuration, the speech coil framework include two symmetrically arranged first avris and two symmetrically arranged second avris；The groove It is symmetricly set on the first avris and/or the corresponding fixed end face of the second avris of speech coil framework.

4. acoustical generator according to claim 1, which is characterized in that be filled with sealing in the groove.

5. acoustical generator according to claim 1, which is characterized in that the vibrating diaphragm further includes fixing in conjunction with the central portion Reinforcement part.

6. acoustical generator according to claim 5, which is characterized in that the speech coil framework and the reinforcement part are located at the vibration The ipsilateral or described speech coil framework of film is in conjunction with the side surface far from the reinforcement part for being fixed on the vibrating diaphragm central portion On.

7. acoustical generator according to claim 5, which is characterized in that the central hollow out of the vibrating diaphragm central portion, the reinforcement The hollowed out area of portion's covering vibrating diaphragm central portion.

8. acoustical generator according to claim 1, which is characterized in that the groove includes bottom surface, and the bottom surface is flat face Or cambered surface.

9. acoustical generator according to claim 8, which is characterized in that the groove further includes side wall surface, and the side wall surface is Flat face or cambered surface.

10. acoustical generator according to claim 1, which is characterized in that the groove is continuous integral structure, or for etc. The segmental structure of spacing setting.